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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-13271] remove surplus projection from distinct</title>
                <link>https://jira.mongodb.org/browse/SERVER-13271</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We use a projection in order to look for a covered and fast-distinct compatible solution.  We shouldn&apos;t keep this projection in the query if we can&apos;t make a fast distinct compatible solution.&lt;/p&gt;</description>
                <environment></environment>
        <key id="122611">SERVER-13271</key>
            <summary>remove surplus projection from distinct</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="hari.khalsa@10gen.com">hari.khalsa@10gen.com</assignee>
                                    <reporter username="hari.khalsa@10gen.com">hari.khalsa@10gen.com</reporter>
                        <labels>
                    </labels>
                <created>Wed, 19 Mar 2014 14:41:57 +0000</created>
                <updated>Wed, 17 May 2017 08:11:06 +0000</updated>
                            <resolved>Wed, 19 Mar 2014 14:49:05 +0000</resolved>
                                    <version>2.6.0-rc1</version>
                                    <fixVersion>2.6.0-rc2</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="519314" author="xgen-internal-githook" created="Wed, 19 Mar 2014 16:11:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;hkhalsa&apos;, u&apos;name&apos;: u&apos;Hari Khalsa&apos;, u&apos;email&apos;: u&apos;hkhalsa@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-13271&quot; title=&quot;remove surplus projection from distinct&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-13271&quot;&gt;&lt;del&gt;SERVER-13271&lt;/del&gt;&lt;/a&gt; don&apos;t forget to fix test in jscore as well&lt;br/&gt;
Branch: v2.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/286b6ba87ee9f6e26ccbf3586e36e3329ea06f53&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/286b6ba87ee9f6e26ccbf3586e36e3329ea06f53&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="519313" author="xgen-internal-githook" created="Wed, 19 Mar 2014 16:11:34 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;hkhalsa&apos;, u&apos;name&apos;: u&apos;Hari Khalsa&apos;, u&apos;email&apos;: u&apos;hkhalsa@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-13271&quot; title=&quot;remove surplus projection from distinct&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-13271&quot;&gt;&lt;del&gt;SERVER-13271&lt;/del&gt;&lt;/a&gt; don&apos;t forget to fix test in jscore as well&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/dc7611456d70964939a8fad7a7679282c9666cea&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/dc7611456d70964939a8fad7a7679282c9666cea&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="519171" author="xgen-internal-githook" created="Wed, 19 Mar 2014 14:48:45 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;hkhalsa&apos;, u&apos;name&apos;: u&apos;Hari Khalsa&apos;, u&apos;email&apos;: u&apos;hkhalsa@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10026&quot; title=&quot;New query system&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10026&quot;&gt;&lt;del&gt;SERVER-10026&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-13271&quot; title=&quot;remove surplus projection from distinct&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-13271&quot;&gt;&lt;del&gt;SERVER-13271&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12878&quot; title=&quot;Aggregations that do not return cursors need to clean up internal cursors&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12878&quot;&gt;&lt;del&gt;SERVER-12878&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2094&quot; title=&quot;distinct cheat with indexes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2094&quot;&gt;&lt;del&gt;SERVER-2094&lt;/del&gt;&lt;/a&gt; avoid surplus projections in distinct&lt;br/&gt;
Branch: v2.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/094f1565d6f82859bc38300b45564dd1ea9f070e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/094f1565d6f82859bc38300b45564dd1ea9f070e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="519167" author="xgen-internal-githook" created="Wed, 19 Mar 2014 14:48:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;hkhalsa&apos;, u&apos;name&apos;: u&apos;Hari Khalsa&apos;, u&apos;email&apos;: u&apos;hkhalsa@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10026&quot; title=&quot;New query system&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10026&quot;&gt;&lt;del&gt;SERVER-10026&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-13271&quot; title=&quot;remove surplus projection from distinct&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-13271&quot;&gt;&lt;del&gt;SERVER-13271&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12878&quot; title=&quot;Aggregations that do not return cursors need to clean up internal cursors&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12878&quot;&gt;&lt;del&gt;SERVER-12878&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2094&quot; title=&quot;distinct cheat with indexes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2094&quot;&gt;&lt;del&gt;SERVER-2094&lt;/del&gt;&lt;/a&gt; avoid surplus projections in distinct&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/267f56a7e0ce36eba21b4b2ef09e32a43370acbf&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/267f56a7e0ce36eba21b4b2ef09e32a43370acbf&lt;/a&gt;&lt;/p&gt;</comment>
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                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="114400">SERVER-12878</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="80321">SERVER-10026</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="13691">SERVER-2094</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="384237">SERVER-29244</issuekey>
        </issuelink>
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